A professional who operates sand mill that grinds premixed paint ingredients to disperse solid ingredients in vehicle. Respnsibilities include:

• Starts mixer to combine ingredients settled in portable tub.
• Hangs hose in tub and attaches opposite end to sand mill intake.
• Turns valve to circulate cooling water through jacket to prevent mill overheating.
• Presses buttons to start mill agitator and pump.
• Draws paste sample to test for dispersion, using grind gauge, and adjusts pump speed as indicated by test results.
• Turns lever to open gate and starts pump to discharge ground mixture from machine.
• Washes residue from filter screen, using brush and solvent.
• Starts pump to clean sand mill and hose system, using solvent.